4-Bromo-3-chloro-2-methylbenzenesulfonyl chloride CAS 1208075-53-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1208075-53-9
Molecular FormulaC7H5BrCl2O2S
Molecular Weight303.99 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Bromo-3-chloro-2-methylbenzenesulfonyl chloride CAS 1208075-53-9 chemical structure

Description

Based on its molecular formula C7H5BrCl2O2S, 4-Bromo-3-chloro-2-methylbenzenesulfonyl chloride contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 303.99 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

4-Bromo-3-chloro-2-methylbenzenesulfonyl chloride (CAS 1208075-53-9), molecular formula C7H5BrCl2O2S and molecular weight 303.99 g/mol, is a CATO reference standard with documented purity and traceability.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

As a certified reference material (CRM), 4-Bromo-3-chloro-2-methylbenzenesulfonyl chloride meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC7H5BrCl2O2S
Molecular Weight303.99 g/mol
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Halogen ContentCl/Br-containing
Sulfur Atoms1

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